<!DOCTYPE html>
<html>
<head>
	<title>q</title>
	<style type="text/css">
		.m_menu {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 51px;
    font-size: 0;
    border-top: 1px solid #e7e7eb; 
    background-position: 0 0;
    background-repeat: no-repeat;
    padding-left: 43px;
}
html {
    background: #F9F9FB;
}
ul{
	background-color: #fff;
}
.m_menu li {
    display: inline-block;
    line-height: 50px;
    position: relative;
    background-color: #fff;
}
.p_width3 {
    width: 33.33%;
}
* {
    box-sizing: border-box;
}
ul, ol {
    padding: 0;
}
p, ul, ol, dl, blockquote, pre, address, fieldset, figure {
    margin: 0;
}
.m_menu li a {
    border-left: 1px solid #e7e7eb;
    font-size: 14px;
    text-align: center;
    display: block;
    width: auto;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    word-wrap: normal;
    color: #616161;
    text-decoration: none;
}
.m_menu li .sub_menu {
    position: absolute;
    left: 0;
    width: 100px;
    border: 1px solid #d0d0d0;
    bottom: 60px;
    background-color: #fafafa;
}
.m_menu li .sub_menu ul {
    font-size: 0;
    text-align: center;
}
.m_menu li .sub_menu ul li {
    width: 100%;
    display: block;
    border-bottom: 1px solid #d0d0d0;
}
ul li, ol li {
    list-style: none;
}
.m_menu li .sub_menu ul li a {
    display: block;
    width: auto;
    border-left: 0;
    font-size: 14px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    word-wrap: normal;
    line-height: 44px;
    color: #616161;
    text-decoration: none;
}
a {
    background: transparent;
}


	</style>
	<script src="jquery.js"></script>
	<script type="text/javascript" src="gre.js"></script>
</head>
<body>
	<ul class="m_menu" id="m_menu">
		<li class="p_width3">
			<a data-lv="1" href="javascript:;" class="">all</a>
			<div class="sub_menu" style="display: block;">
				<ul>
					<li>
						<a data-lv="2" href="javascript:;">qq</a>
					</li>
					<li>
						<a data-lv="2" href="javascript:;">ww</a>
					</li>
					<li>
						<a data-lv="2" href="javascript:;" class="">ee</a>
					</li>
					<li>
						<a data-lv="2" href="javascript:;" class="active">rr</a>
					</li>
					<li>
						<a data-lv="2" class="add_sub_menu" href="javascript:;">+</a>
					</li>
				</ul> <i class="tra"></i> <i class="tra2"></i>
			</div>
		</li>
		
		
		
	</ul>
</body>
</html>